CN102915898A - Zigzag waveguide slow-wave line - Google Patents
Zigzag waveguide slow-wave line Download PDFInfo
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- CN102915898A CN102915898A CN2012104116455A CN201210411645A CN102915898A CN 102915898 A CN102915898 A CN 102915898A CN 2012104116455 A CN2012104116455 A CN 2012104116455A CN 201210411645 A CN201210411645 A CN 201210411645A CN 102915898 A CN102915898 A CN 102915898A
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Abstract
The invention discloses a zigzag waveguide slow-wave line which comprises a zigzag waveguide and a plurality of metal ridge pieces and metal wing pieces, wherein the zigzag waveguide is formed by connecting a series of arc bending waveguides or right-angled bending waveguides and straight waveguides end to end; and one metal ridge piece in a certain thickness is loaded along the wide side direction of the internal wall of each of the straight waveguides, and one metal wing piece in a certain thickness is loaded along the narrow side direction of the internal wall of each of the straight waveguides. Circular through holes are arranged on the internal wall of the wide side of the straight wave guide and the metal ridge piece along the axial symmetry line of the zigzag waveguide, and the circular through holes of the straight waveguides of the two adjacent zigzag units are connected by a metal tube in the same aperture size of the circular through hole so as to form an electronic stream channel. The test indicates that the zigzag waveguide slow-wave line has a more flat dispersion curve in the same structural size, so that the zigzag waveguide slow-wave line can work in a wider scope of frequency band, with a wider working frequency band, and in addition, the coupled impedance can be increased.
Description
Technical field
The invention belongs to the microwave vacuum technical field of electronic devices, more specifically say, relate to the notes of travelling wave tube-Bo mutual effect device: a kind of tortuous wavelength slow wave line.
Background technology
The electron tube that travelling wave tube is most widely used as microwave frequency band has outstanding application status in various fields such as millimetre-wave radar, communication, microwave remote sensing, radiation measurements.Slow wave structure (slow wave line) then is the core component of travelling wave tube notes-Bo mutual effect, and its performance quality has directly determined the technical merit of travelling wave tube.
At present, there is serious contradiction in travelling wave tube in power output and bandwidth of operation.Helix slow wave line and distortion class slow wave line travelling wave tube thereof have very wide bandwidth, but power output is subjected to the radiating condition restriction and less; And coupling cavity and ladder track, this class travelling wave tube is owing to being all-metal construction, the general comparable helix slow wave line class travelling wave tube of power capacity is high one more than the order of magnitude, but because the impact of band edge concussion, its bandwidth is very narrow.And the rising along with operating frequency, particularly at short millimeter band or even terahertz wave band, it is very little that the size of device will become, traditional helix slow wave line and coupled-cavity TWT will be difficult to processing, the helix slow wave line travelling wave tube also can only be operated in below the 60GHz at present, and the Precision Machining of coupled-cavity TWT and assembling all are faced with huge difficulty and challenge.Therefore, carry out and both have large power capacity, the research that has again the novel slow wave line of wider bandwidth of operation just seems extremely important.
Winding waveguide slow wave line, it is the novel all-metal slow wave line of a class, this slow wave line has good bandwidth performance when realizing high power capacity, and have that mechanical strength is high, good heat dissipation, power capacity are large, processing is than the advantage such as being easier to and the input and output coupled structure is relatively simple.Simultaneously, owing to can adopt Micrometer-Nanometer Processing Technology manufacturing, so that the miniature winding waveguide travelling wave tube take the winding waveguide slow wave structure as core becomes a kind of powerful miniaturized radiation source millimere-wave band is very potential.Has good application prospect in fields such as broadband millimeter-wave communications.But, because winding waveguide slow wave line belongs to the system that first-harmonic is the back ripple, be operated on the negative primary space harmonic wave, so coupling impedance is low, and coupling impedance is directly related with gain and the efficient of travelling wave tube as the parameter that characterizes slow wave system and electron interaction power.According to existing domestic and international related experiment report, because the coupling impedance of winding waveguide slow wave line is low, so that the gain of travelling wave tube integral body and efficient have been limited.
On 02 09th, 2011 Granted publication, notification number is that CN 101651074B, name are called in " a kind of ridge loading winding waveguide slow wave line ", the applicant loads certain thickness metal ridge sheet by the straight wave guide inwall in each tortuous unit; Position along the middle Axisymmetric Distributed Line of slow wave structure on wave guide wall and metal ridge sheet has a manhole, between the manhole of the straight wave guide of adjacent two tortuous unit, adopt the metal tube identical with the manhole aperture to connect, form the mode of electron beam passage, improved to a certain extent the coupling impedance of winding waveguide slow wave line.But working band is narrower, and its coupling impedance has necessity of further raising.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of winding waveguide slow wave line is provided, under comparable size, improve the working band of winding waveguide slow wave line, and further improve its coupling impedance, thereby make travelling wave tube have higher gain and efficient.
For achieving the above object, winding waveguide slow wave line of the present invention comprises:
One winding waveguide, this winding waveguide is formed by connecting from beginning to end by a series of circular arc curved waveguide or right-angle bending waveguide and straight wave guide, and is equal to the winding waveguide structure that is periodically bent to U-shaped meander line or perpendicular type meander line by rectangular waveguide along the electric field face;
Multi-disc metal ridge sheet respectively is loaded with the certain thickness metal ridge sheet of a slice at each straight wave guide inwall along broadside;
Position along the middle Axisymmetric Distributed Line of winding waveguide on straight wave guide broadside and metal ridge sheet has manhole, between the manhole of adjacent two straight wave guides, adopts the metal tube identical with the manhole aperture size to connect, and forms the electron beam passage; Metal ridge sheet width w
1, thickness d
1, the height h
1Satisfy:
2r
0<w
1≤a,0<d
1<0.5b,2r
0<h
1≤H；
Wherein, a is the straight wave guide width edge length, and b is the narrow edge lengths of straight wave guide, r
0Be the radius of electron beam passage, H is the height of straight wave guide;
It is characterized in that, also comprise:
A plurality of metal tab all respectively are loaded with the certain thickness metal tab of a slice at the straight wave guide inwall along narrow limit inwall direction;
Metal tab width w
2, thickness d
2, the height h
2Satisfy:
w
2≤b,0<d
2<0.5a,h
2≤H；
Goal of the invention of the present invention is achieved in that
Winding waveguide slow wave line of the present invention comprises winding waveguide and multi-disc metal ridge sheet and metal tab, and winding waveguide is formed by connecting from beginning to end by a series of circular arc curved waveguide or right-angle bending waveguide and straight wave guide; All respectively be loaded with the certain thickness metal ridge sheet of a slice at the straight wave guide inwall along broadside, all respectively be loaded with the certain thickness metal tab of a slice at the straight wave guide inwall along narrow limit inwall direction.Position along the middle Axisymmetric Distributed Line of winding waveguide on straight wave guide broadside interior wall and metal ridge sheet has manhole, between the manhole of the straight wave guide of adjacent two tortuous unit, adopt the metal tube identical with the manhole aperture size to connect, form the electron beam passage.By test, under identical physical dimension, winding waveguide slow wave line of the present invention is that the dispersion curve of ridge wing loading winding waveguide slow wave line is more smooth, can be operated in wider frequency band range, and working band is wider; Simultaneously, under identical operating frequency, winding waveguide slow wave line of the present invention has larger dimensional parameters.In addition, by test, the coupling impedance of winding waveguide slow wave line of the present invention also is improved.
Description of drawings
Fig. 1 is a kind of embodiment structure chart of winding waveguide slow wave line of the present invention;
Fig. 2 is the three-dimensional section view of winding waveguide slow wave line shown in Figure 1;
Fig. 3 is the waveguide inner space schematic diagram of winding waveguide slow wave line shown in Figure 1;
Fig. 4 is the cross-sectional view of winding waveguide slow wave line shown in Figure 1;
Fig. 5 is the longitudinal section of winding waveguide slow wave line shown in Figure 1;
Fig. 6 is the dispersion characteristics comparison diagram of common winding waveguide slow wave line, ridge loading winding waveguide slow wave line and winding waveguide slow wave structure of the present invention;
Fig. 7 is the coupling impedance comparison diagram of common winding waveguide slow wave line, ridge loading winding waveguide slow wave line and winding waveguide slow wave line of the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described, so that those skilled in the art understands the present invention better.What need to point out especially is that in the following description, when perhaps the detailed description of known function and design can desalinate main contents of the present invention, these were described in here and will be left in the basket.
In the present embodiment, shown in Fig. 1 ~ 5, winding waveguide is formed by connecting from beginning to end by a series of circular arc curved waveguide and straight wave guide.Certainly in specific implementation process, also can adopt right-angle bending waveguide and straight wave guide to be formed by connecting from beginning to end.Winding waveguide is equal to by rectangular waveguide 1 and periodically bends to the winding waveguide structure that U-shaped meander line (or perpendicular type meander line) forms along the electric field face.Be loaded with separately certain thickness metal ridge sheet 4 at each straight wave guide inwall along broadside, simultaneously be loaded with certain thickness metal tab 5 along narrow limit inwall direction, position along the middle Axisymmetric Distributed Line 2 of winding waveguide on straight wave guide broadside and metal ridge sheet has manhole, between the manhole of adjacent two straight wave guides, adopt the metal tube identical with the aperture size of manhole 3 to connect, form the electron beam passage.
In Fig. 3, the A position is used for metal-loaded ridge sheet, and the B position is used for the metal-loaded fin, and the C position is used for placing metal tube.
Winding waveguide slow wave line of the present invention is dimensional parameters such as Fig. 4, shown in Figure 5 of ridge wing loading winding waveguide slow wave line, and a is the straight wave guide width edge length, and b is the narrow edge lengths of straight wave guide, r
0Be the radius of electron beam passage, H is the height of straight wave guide, and L is the meander length of single tortuous periodic structure, w
1, d
1, h
1Metal ridge sheet width, thickness, highly; w
2, d
2, h
2Metal tab width, thickness, highly.
In the present embodiment, winding waveguide slow wave line of the present invention is the metal tab width w of ridge wing loading winding waveguide slow wave line
2＜b-2d, thickness 0＜d
2＜a/2-r
0, concrete structure size (unit: mm) be: a=1.15, b=0.17, H=0.295, L=0.7032, r
0=0.09, w
1=0.805, d
1=0.034, h
1=0.295, w
2=0.102, d
2=0.1725, h
2=0.2065.Ridge wing loading winding waveguide slow wave line is tested, obtained its dispersion characteristics and coupling impedance, and compare test result such as Fig. 6, shown in Figure 7 with common winding waveguide, the ridge loading winding waveguide slow wave line of same size.Wherein curve 6 and curve 10 are respectively dispersion characteristic curve and the coupling impedance curves of common winding waveguide slow wave structure, curve 7 and curve 11 are respectively dispersion characteristic curve and the coupling impedance curves of ridge loading winding waveguide slow wave structure, and curve 8 and curve 12 are respectively that winding waveguide slow wave line of the present invention is dispersion characteristic curve and the coupling impedance curve of ridge wing loading winding waveguide slow wave line.
In another example, winding waveguide slow wave line is ridge wing loading winding waveguide slow wave line physical dimension (unit: mm): a=1.6, b=0.3, H=0.42, L=1.0009, r
0=0.18, w
1=1.248, d
1=0.06, h
1=0.42, w
2=0.18, d
2=0.176, h
2=0.294.Winding waveguide slow wave line is that ridge wing loading winding waveguide slow wave line is tested, and obtains its dispersion characteristics, and test result is shown in curve among Fig. 69.
As can be seen from Figure 6: the dispersion curve (curve 7) of the dispersion curve of common winding waveguide slow wave line (curve 6) and ridge loading winding waveguide slow wave line, can be operated between line segment A and the B the approximately frequency range of 30GHz, and being the dispersion curve (curve 8) of ridge wing loading winding waveguide slow wave line, winding waveguide slow wave line of the present invention can be operated between line segment C and the D the approximately frequency range of 50GHz, explanation is under identical physical dimension, winding waveguide slow wave line of the present invention is that the dispersion curve of ridge wing loading winding waveguide slow wave line is more smooth, can be operated in wider frequency band range.
Relatively the winding waveguide slow wave line of the present invention of another embodiment be the dispersion curve (curve 6) of the dispersion curve (curve 9) of ridge wing loading winding waveguide slow wave line and common winding waveguide slow wave line and ridge loading winding waveguide slow wave line dispersion curve (curve 7) as can be known, they all can be operated in the frequency range of correspondence between line segment A and the B.Explanation is under identical operating frequency, and winding waveguide slow wave line of the present invention is that ridge wing loading winding waveguide slow wave line has larger dimensional parameters.
Relatively can the finding out of curve 10, curve 11 and curve 12 from Fig. 7: than common winding waveguide slow wave line, the coupling impedance of ridge loading winding waveguide slow wave line is higher, has the coupling impedance higher than ridge loading winding waveguide slow wave line and winding waveguide slow wave line of the present invention is ridge wing loading winding waveguide slow wave line.
Fig. 6,7 test specification can improve operating frequency and the coupling impedance of winding waveguide slow wave line, so that the gain of travelling wave tube and efficient are improved by metal-loaded ridge sheet and metal tab on the straight wave guide of winding waveguide; Under identical operating frequency, winding waveguide slow wave line of the present invention is that ridge wing loading winding waveguide slow wave line has larger dimensional parameters simultaneously.
Although the above is described the illustrative embodiment of the present invention; so that those skilled in the art understand the present invention; but should be clear; the invention is not restricted to the scope of embodiment; to those skilled in the art; as long as various variations appended claim limit and the spirit and scope of the present invention determined in, these variations are apparent, all utilize innovation and creation that the present invention conceives all at the row of protection.
Claims (2)
1. winding waveguide slow wave line comprises:
One winding waveguide, this winding waveguide is formed by connecting from beginning to end by a series of circular arc curved waveguide or right-angle bending waveguide and straight wave guide, and this winding waveguide is equal to the winding waveguide structure that is periodically bent to U-shaped meander line or perpendicular type meander line by rectangular waveguide along the electric field face;
Multi-disc metal ridge sheet respectively is loaded with the certain thickness metal ridge sheet of a slice at each straight wave guide inwall along broadside;
Position along the middle Axisymmetric Distributed Line of winding waveguide on straight wave guide broadside and metal ridge sheet has manhole, between the manhole of adjacent two straight wave guides, adopts the golden number pipe identical with the manhole aperture size to connect, and forms the electron beam passage; Metal ridge sheet width w
1, thickness d
1, the height h
1Satisfy:
2r
0<w
1≤a,0<d
1<0.5b,2r
0<h
1≤H；
Wherein, a is the straight wave guide width edge length, and b is the narrow edge lengths of straight wave guide, r
0Be the radius of electron beam passage, H is the height of straight wave guide;
It is characterized in that, also comprise:
A plurality of metal tab all respectively are loaded with the certain thickness metal tab of a slice at the straight wave guide inwall along narrow limit inwall direction;
Metal tab width w
2, thickness d
2, the height h
2Satisfy:
w
2≤b,0<d
2<0.5a,h
2≤H。
2. slow wave line claimed in claim 1 is characterized in that, described metal tab width w
2＜b-2d
1, thickness d
2A/2-r
0
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210411645.5A CN102915898B (en) | 2012-10-25 | 2012-10-25 | Zigzag waveguide slow-wave line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210411645.5A CN102915898B (en) | 2012-10-25 | 2012-10-25 | Zigzag waveguide slow-wave line |
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| Publication Number | Publication Date |
|---|---|
| CN102915898A true CN102915898A (en) | 2013-02-06 |
| CN102915898B CN102915898B (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210411645.5A Expired - Fee Related CN102915898B (en) | 2012-10-25 | 2012-10-25 | Zigzag waveguide slow-wave line |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354199A (en) * | 2013-07-01 | 2013-10-16 | 电子科技大学 | Ridge-added microstrip line plane slow wave structure |
| CN106098509A (en) * | 2016-08-29 | 2016-11-09 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide combination type directrix plane ridge waveguide folded waveguide |
| CN106128912A (en) * | 2016-08-29 | 2016-11-16 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide combination type directrix plane rectangular waveguide folded waveguide |
| CN113097034A (en) * | 2021-04-08 | 2021-07-09 | 山东建筑大学 | Slow wave structure based on coupling resonance |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354199A (en) * | 2013-07-01 | 2013-10-16 | 电子科技大学 | Ridge-added microstrip line plane slow wave structure |
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| CN106098509A (en) * | 2016-08-29 | 2016-11-09 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide combination type directrix plane ridge waveguide folded waveguide |
| CN106128912A (en) * | 2016-08-29 | 2016-11-16 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide combination type directrix plane rectangular waveguide folded waveguide |
| CN106098509B (en) * | 2016-08-29 | 2017-10-24 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide combination type directrix plane ridge waveguide folded waveguide |
| CN113097034A (en) * | 2021-04-08 | 2021-07-09 | 山东建筑大学 | Slow wave structure based on coupling resonance |
| CN113097034B (en) * | 2021-04-08 | 2023-12-08 | 山东建筑大学 | Slow wave structure based on coupling resonance |
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| CN102915898B (en) | 2014-12-24 |
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